265381056 has 224 divisors, whose sum is σ = 841248000. Its totient is φ = 81782784.

The previous prime is 265381021. The next prime is 265381063. The reversal of 265381056 is 650183562.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 265381056.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1937020 + ... + 1937156.

Almost surely, 2^265381056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 265381056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (420624000).

265381056 is an abundant number, since it is smaller than the sum of its proper divisors (575866944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

265381056 is a wasteful number, since it uses less digits than its factorization.

265381056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 265381056 is about 16290.5204336755. The cubic root of 265381056 is about 642.6235534822.

The spelling of 265381056 in words is "two hundred sixty-five million, three hundred eighty-one thousand, fifty-six".